This Hertfordshire consultancy helps multinational corporations, including Deloitte, EY and Accenture, build tech-enhanced offices and smart buildings. It uses robotics, AV technology, artificial intelligence and specialist hi-tech displays to make interiors more interactive for staff and visitors. Richard Cobbold, 50, and James Henry, 59, set up DV Signage in 2008 having previously founded electronics company Digital View. Offices in America, India, Philippines and Hong Kong helped international sales reach £5.1m last year.